12x 3x 7 3 4 3x July 8, 2019 16 32 64 128 12x 3x 7 3 4 3x how many solutions How many solutions does 12x 3x 7 3 4 3x have 12x - left 3x 7 right )=- 3 left 4 3x right 12x-7 3 12 7 = 3 x